METHOD FOR HEAT TREATING SERPENTINE FOR MINERAL CARBONATION

A heat treatment process of serpentine as raw material for mineral carbonation is provided to efficiently remove -OH groups existing in untreated serpentine and improve crystalline property of the treated serpentine by heat-treating milled serpentine powder at a desired temperature for a constant ti...

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Bibliographische Detailangaben
Hauptverfasser:	KIM, DONG WHA, KONG, KI HOON, CHOI, WEON KYUNG, MOON, SEUNG HYUN, CHO, TAE HWAN, HAN, SANG SIK, LEE, JAE KEUN, KIM, KI HYUNG, KIM, KYONG HOON, HWANG, OK JUNG, YOUN, CHANG HWA
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS INORGANIC CHEMISTRY METALLURGY
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Beschreibung
Zusammenfassung:	A heat treatment process of serpentine as raw material for mineral carbonation is provided to efficiently remove -OH groups existing in untreated serpentine and improve crystalline property of the treated serpentine by heat-treating milled serpentine powder at a desired temperature for a constant time period. The heat treatment process comprises the steps of: milling serpentine ore as raw material of mineral carbonation into powder with particle size less than 125 micrometers; heating the powder at above 700deg.C for more than 10 minutes under oxygen or atmosphere; and cooling the powder to ambient temperature. Time for heat treatment of serpentine is more than 10 minutes at a constant heat treatment temperature excluding temperature raising process. The serpentine ore typically includes metal elements such as silicon, magnesium, iron, calcium, aluminum, etc.